I just want to say that I have NOT been paid, offered money/reimbursement/discounts or gifted this item. I paid for this item and my review is my own without any influence.Now that that’s out of the way, if you are considering a soft rooftop storage solution and don’t want to commit to a hardtop, let this be the review you need! I took a vacation with my best friend and her 2 kids ages 7 & 9 and toddler age 1.5. The trip was about 15-17 hours each way due to distance and having to stop for multiple breaks for the kids…and if you have ever traveled with kids you know they want to bring all their favorite snacks, food, drinks, toys, blankies, iPads, gadgets, and well even room in a 7-8 person vehicle is still limited when you leave home for anything longer than 3-4 days with more than 4 people and we left for 12 days.I initially considered buying for a trip I have in late September, since I’m offering to be the carpool driver in my 7 person SUV and thought this trip would be a great test run for both quality and durability, as well as ease of use.I give this 5 stars hands down. It was a great purchase! I researched several brands, read countless reviews, examined the quality to the best of my ability and landed on this one. It was this or RoofPax and this one I do believe is far superior.Well packaged and easy to follow directions, I was able to get it setup and ready to go in 10 -15 mins the first time and then 5-10 mins the second time. It comes with a slip grip pad (same as the foam style anti-slip rug pad but with better grip) to put between your rooftop and bag. Great to keep from scratching the top and extra grip protection so it doesn’t slide around while in motion.It has several points of attachment with sturdy clips and additional attachment to accommodate vehicles without roof crossbars.The material is a nice heavy duty vinyl with a solid waterproof zipper that comes with “suitcase lock” setup for protection and a large overhang on the 3 sides with heavy duty velcro to cover and act as additional waterproofing for the zipper so nothing gets wets.As you can see from the photos, this SUV had crossbars but not side rails. It is setup to be used for side rails as best option due to the way the straps are attached to the bag. That said, I just turned it 90 degrees and decided that was how it was gonna have to be lol. Too late to worry and it was time to go!It worked flawlessly!! I purchased the 20 cubic feet and yeah… SO MUCH ROOM. Here’s the items I crammed into it only to realize I still had room for more:2 medium 25-27 in luggage suitcases (these are one size down from the largest)2 kids duffel bags3 pillows (king size)2 kids life vests1 toddler life vest suit1 toddler water inflatableA box of diapersA large telescopeA couple blankets2 carry bags of clothes from shopping on vacationAnd a few more small things that tucked in.Let me say we left with more than we started with and 90% was packed into this storage space and there was still room! Truly shocked by everything that fit in here! Seriously it’s worth the buy!Quality and durability is 5 stars as wellWe drove about 7 hours or so on the way back in several rainstorms of different intensities and intervals and nothing was wet when we arrived home. This is truly waterproof no matter what direction you have it, though it does have an intended directional for use. The straps are solid and didn’t stretch very much and I always checked them anyway time we stopped because I was paranoid about it not withstanding the wind speed and vibrations of driving but it didn’t flinch or break. On the way home I was able to not worry at all. I had complete faith in it!I’m a 34 year old single lady and I figured this out on the fly… literally unboxed in the driveway 30 mins before leaving and packed it myself while my friend wrangled the kids and last minute potty breaks. Having a friend or partner to help load and unload definitely helps but not required! Additionally, I saw the other brand I mentioned on several rooftops and mine not only looked way better, but those didn’t seem to be near as quality as this one and I’m glad I went with this brand!